The third grade students collected 90 cans of food for a food drive. They want to put an equal number of cans into each of 6 boxes. How many cans will they put into each box?

15 cans into each box.
90 ÷ 6 = 15

Check it:
15 • 6 = 90

Have a nice day
Brainliest will be appreciated

In this case, your best bet is to use align* for the outer alignment (the = signs), and aligned for the inner one (the + signs): this is because \begin{aligned}...\end{aligned} is designed to be nested within other kinds of display math. However, you also want to vertically align the inner one (at the pluses) with the outer one, so you'll write it as \begin{aligned}[t]...\end{aligned}. Here's what it looks like in code: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{align*} A_1 &= \begin{aligned}[t] a_1 &+ a_2 + a_3 + a_4 + a_5 + a_6 + a_7\\ &+ a_8 + a_9 + a_{10} + a_{11} + a_{12} + a_{13}\\ &+ a_{14} + a_{15} + a_{16} + a_{17} + a_{18} + a_{19} \end{aligned}\\ A_2 &= \begin{aligned}[t] a_2 &+ b_2 + b_3 + b_4 + b_5 + b_6 + b_7\\ &+ b_8 + b_9 + b_{10} + b_{11} + b_{12} + b_{13}\\ &+ b_{14} + b_{15} + b_{16} + b_{17} + b_{18} + b_{19} \end{aligned} \end{align*} \end{document}